At Uphold, we make it easy to buy and sell any major digital currency. You can invest, transfer or send/receive between many cryptocurrencies, traditional currencies and precious metals. Our digital money app is slick, easy, and secure.

Tier 2
€ 0
€ 250
€ 1,000
€ 1,500
€ 2,500
Up to € 2,500
Tier 2

iOS application. This is currently installable on Jailbroken devices, please read the out-of-scope findings.

Tier 2

Use this environment for financial transaction testing, degradation attacks, or horizontal privilege attacks. Fund with Crypto Testnet Faucet (e.g. for Bitcoin)

Tier 2

Production WebWallet Application. Do not test service degradation attacks or horizontal privilege here.

Tier 2

Android application. This is currently installable on Jailbroken devices, please read the out-of-scope findings.

Tier 2

Use this environment for financial transaction testing, degradation attacks, or horizontal privilege attacks. Fund with Crypto Testnet Faucet (e.g. for Bitcoin)

Tier 2

Production WebWallet Application. Do not test service degradation attacks or horizontal privilege here.


No Bounty

We are willing to give bonuses on anything you find and we agree is impactful, in the rest of our domain

In scope

IMPORTANT: Please only perform service degradation attacks or horizontal privilege attacks on the Sandbox URL's

We've done our best to clean most of our known issues and now would like to request your help to spot the ones we missed! We are specifically looking for;

  • Leaking of large quantities of personal data, if you can find a way to expose bulk quantities of data, we want to know about it.
  • Horizontal privilege escalation i.e breaking into someone elses wallet. This should only be attempted in the Sandbox environment.
  • Specifically related to our trading business, we want to know if you're able to "create money", duplicate transactions or receive more funds into your wallet than are transferred. Any kind of issue which would negatively affect the balance sheet.
Out of scope


  • Self-XSS that cannot be used to exploit other users
  • Verbose messages/files/directory listings without disclosing any sensitive information
  • CORS misconfiguration on non-sensitive endpoints
  • Missing cookie flags
  • Missing security headers
  • Cross-site Request Forgery with no or low impact
  • Presence of autocomplete attribute on web forms
  • Reverse tabnabbing
  • Bypassing rate-limits or the non-existence of rate-limits.
  • Best practices violations (password complexity, expiration, re-use, etc.)
  • Clickjacking on pages with no sensitive actions
  • CSV Injection
  • Host Header Injection
  • Sessions not being invalidated (logout, enabling 2FA, ..)
  • Hyperlink injection/takeovers
  • Mixed content type issues
  • Cross-domain referer leakage
  • Anything related to email spoofing, SPF, DMARC or DKIM
  • Content injection
  • Username / email enumeration
  • E-mail bombing
  • HTTP Request smuggling without any proven impact
  • Homograph attacks
  • XMLRPC enabled
  • Banner grabbing / Version disclosure
  • Open ports without an accompanying proof-of-concept demonstrating vulnerability
  • Weak SSL configurations and SSL/TLS scan reports
  • Not stripping metadata of images
  • Disclosing credentials without proven impact
  • Disclosing API keys without proven impact
  • Same-site scripting
  • Subdomain takeover without taken over the subdomain
  • Arbitrary file upload without proof of the existence of the uploaded file


  • In case that a reported vulnerability was already known to the company from their own tests, it will be flagged as a duplicate.
  • Theoretical security issues with no realistic exploit scenario(s) or attack surfaces, or issues that would require complex end user interactions to be exploited, may be excluded or be lowered in severity
  • Spam, social engineering and physical intrusion
  • DoS/DDoS attacks or brute force attacks.
  • Vulnerabilities that are limited to non-current browsers (older than 3 versions) will not be accepted
  • Attacks requiring physical access to a victim’s computer/device, man in the middle or compromised user accounts
  • Recently disclosed zero-day vulnerabilities in commercial products where no patch or a recent patch (< 2 weeks) is available. We need time to patch our systems just like everyone else - please give us 2 weeks before reporting these types of issues.
  • Reports that state that software is out of date/vulnerable without a proof-of-concept

AWS Specific

  • Publically readable S3 buckets. We have a selection of our S3 buckets available to the Internet


  • Shared links leaked through the system clipboard
  • Any URIs leaked because a malicious app has permission to view URIs opened
  • The absence of certificate pinning
  • Sensitive data in URLs/request bodies when protected by TLS
  • Lack of obfuscation
  • Path disclosure in the binary
  • Self-XSS that cannot be used to exploit other users
  • Lack of jailbreak & root detection
  • Crashes due to malformed URL Schemes
  • Lack of binary protection (anti-debugging) controls, mobile SSL pinning
  • Snapshot/Pasteboard leakage
  • Exploits only possible in a jailbroken environment
  • API key leakage used for insensitive activities/actions
  • Attacks requiring physical access to the victim's device
  • Attacks requiring installing malicious applications onto the victim's device
  • Attacks using OS vulnerabilities, for instance an attack using a vulnerability on a specific android / iOS version
Rules of engagement

Our promise to you

  • We are happy to respond to any questions, please use the button in the right top corner for this.
  • We respect the safe harbour clause that you can find below

Your promise to us

  • Provide detailed but to-the point reproduction steps
  • Include a clear attack scenario. How will this affect us exactly?
  • Remember: quality over quantity!
  • Please do not discuss or post vulnerabilities without our consent (including PoC's on YouTube and Vimeo)
  • Please do not use automatic scanners -be creative and do it yourself! We cannot accept any submissions found by using automatic scanners. Scanners also won't improve your skills, and can cause a high server load (we'd like to put our time in thanking researchers rather than blocking their IP's 😉)

Safe harbour for researchers considers ethical hacking activities conducted consistent with the Researcher Guidelines, the Program description and restrictions (the Terms) to constitute “authorized” conduct under criminal law. will not pursue civil action or initiate a complaint for accidental, good faith violations, nor will they file a complaint for circumventing technological measures used by us to protect the scope as part of your ethical hacking activities.

If legal action is initiated by a third party against you and you have complied with the Terms, will take steps to make it known that your actions were conducted in compliance and with our approval.

Severity assessment


  • RCE (Remote Code Execution)


  • Access to all customer personal data
  • SQL injection


  • Stored XSS without user interaction
  • Privilege escalation
  • Authentication bypass on critical infrastructure


  • XSS
  • CSRF with a significant impact


  • XSS that requires lots of user interaction ( > 3 steps)
  • CSRF with a very limited impact

Where can we get credentials for the app?

You can self-register on the application but please don’t forget to use your address.

All aboard!
Please log in or sign up on the platform

For obvious reasons we can only allow submissions or applications for our program with a valid intigriti account.

It will only take 2 minutes to create a new one or even less to log in with an existing account, so don't hesitate and let's get started. We would be thrilled to have you as part of our community.

Program specifics
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